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New formula AI function: evaluate_village_possession

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This commit is contained in:
Bartek Waresiak 2008-05-23 11:24:07 +00:00
parent 14b80ff715
commit ad7ba3e588
1 changed files with 67 additions and 0 deletions
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67
src/formula_ai.cpp
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@ -388,6 +388,71 @@ public:
const std::string& type() const { return type_; }
};
class evaluate_village_possession_function : public function_expression { //TODO
public:
evaluate_village_possession_function(const args_list& args, const formula_ai& ai)
: function_expression("evaluate_village_possession", args, 0, 0), ai_(ai) {
}
private:
variant execute(const formula_callable& variables) const {
int villages_number = ai_.get_info().map.villages().size();
//in case there are few villages, ignore this evaluation
if (villages_number < 6)
return variant(50);
int allied_villages_number = 0;
int opponents_villages_number = 0;
int allies = 0;
int teams_number = ai_.get_info().teams.size();
for( int i = 0; i < teams_number; ++i)
{
if ( ai_.current_team().is_enemy(i+1) )
{
opponents_villages_number += ai_.get_info().teams[i].villages().size();
} else
{
++allies;
allied_villages_number += ai_.get_info().teams[i].villages().size();
}
}
int controlled_villages = allied_villages_number + opponents_villages_number;
//how important is each village, but multipled by 50
int single_village_ratio = 0;
if (villages_number != 0)
single_village_ratio = 5000/villages_number;
int village_state = allied_villages_number - opponents_villages_number;
//up to this point, vilage_state contains state of the villages in AI's team
//now check how the AI is doing compared to its allies
int ai_villages = ai_.current_team().villages().size();
int ai_desired_villages = allied_villages_number / allies;
village_state += ai_villages - ai_desired_villages;
//calculate evaluation
int evaluation = 50 + (village_state * single_village_ratio)/100;
if (evaluation > 100)
evaluation = 100;
if (evaluation < 0)
evaluation = 0;
return variant(evaluation);
}
const formula_ai& ai_;
};
class recruit_function : public function_expression {
public:
explicit recruit_function(const args_list& args)
@ -809,6 +874,8 @@ class ai_function_symbol_table : public function_symbol_table {
return expression_ptr(new outcomes_function(args, ai_));
} else if(fn == "evaluate_for_position") {
return expression_ptr(new evaluate_for_position_function(args, ai_));
} else if(fn == "evaluate_village_possession") {
return expression_ptr(new evaluate_village_possession_function(args, ai_));
} else if(fn == "move") {
return expression_ptr(new move_function(args));
} else if(fn == "attack") {